When arranged in order of increasing bond strength, which order is correct?

The correct order of increasing bond strength is,$\mathrm{O}-\mathrm{O}<\mathrm{S}-\mathrm{S}<\mathrm{S}=\mathrm{S}<\mathrm{O}=\mathrm{O}$.

As the number of electron pairs in a bond between two atoms rises, so does the bond's strength. Thus, triple bonds are stronger and shorter than double bonds between the same two atoms, and double bonds are similarly stronger and shorter than single bonds between the same two atoms.